Summary
The dynamic range of UT-flaw inspection channels gets more important. In thick material or high damping material for calibration of UT-channels using back surface echo amplitude or in automated inspection-set-ups, one needs at least 75 dB dynamic range without gain switch. The logarithmic approach seems to be a good solution. A comparison of logarithmic amplifier and rectifier against the direct log. ADC is given. The advantages of the direct log. ADC is shown at reinforced carbon fiber material, plate inspection etc.
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© 1983 Springer-Verlag Berlin Heidelberg
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Abend, K. (1983). Logarithmic Analog-To-Digital Conversion — A New Concept for the Processing of Ultrasonic Data. In: Höller, P. (eds) New Procedures in Nondestructive Testing. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-02363-1_4
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DOI: https://doi.org/10.1007/978-3-662-02363-1_4
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-02365-5
Online ISBN: 978-3-662-02363-1
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